School task in Java - XML and DTD

So these are instructions from my teacher, I will write them here: Games Galore is an independent organization that publishes reviews of the computer games. All reviews are written by members on a voluntary basis. Games Galore would like to save the review information in a structured way. Your task is to formulate a document type definition (DTD) for reviews and to create an xml file with examples-reviews which meets the requirements asked by the DTD. Here is an informal description of the rules that must characterize your document structure: A collection of game ratings consist of zero or more games. Each game has a title and a number (one or more) reviews of this game. Each game is also categorized into genres (s) (e.g. First Person Shooter, Real Time Strategy, etc.). A review is written by exactly one Games Galoresort Member. The review does not need to contain a grading. Instead, the review author write a text describing her view of the game's merits and drawbacks. Your task is to interpret that description and formalize this a DTD document called reviews.dtd. Any reasonable interpretation of the above rules are approved as long as it does not violate these rules. Also create an xml document called [login to view URL] with sample data. This document must be validated against the DTD.